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| author | Oleg Nesterov <oleg@redhat.com> | 2011-03-06 18:03:11 +0100 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2011-04-09 15:53:57 +0200 |
| commit | ae6b585eeb74670a2dec1fe4394bdfbdb9395cc2 (patch) | |
| tree | ea1642cc0abf3b73573769bdb15c8d390bc3e7c8 /fs/exec.c | |
| parent | exec: unify do_execve/compat_do_execve code (diff) | |
| download | linux-ae6b585eeb74670a2dec1fe4394bdfbdb9395cc2.tar.xz linux-ae6b585eeb74670a2dec1fe4394bdfbdb9395cc2.zip | |
exec: document acct_arg_size()
Add the comment to explain acct_arg_size().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/exec.c b/fs/exec.c index 89d788ca7829..5cb53f0232b1 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -167,7 +167,12 @@ out: } #ifdef CONFIG_MMU - +/* + * The nascent bprm->mm is not visible until exec_mmap() but it can + * use a lot of memory, account these pages in current->mm temporary + * for oom_badness()->get_mm_rss(). Once exec succeeds or fails, we + * change the counter back via acct_arg_size(0). + */ static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) { struct mm_struct *mm = current->mm; |